Music-sheet feeder.



H. K. SANDELL. Music SHEET FEEDER.

APPLICATION FILED DECJB, 1914.

Patented Apr. 29, 1919.

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Patented Apr. 29, 1919.

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Patented Apr. 29,1919.

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MUSIC SHEET FEEDER.

APPHCATION FILED DEC.I8. 1914.

1,302,439. Patented Apr. 29,1919.

UNITED STATES PATENT OFFICE.

HENRY K. SANDELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO HERBERT S. MILLS, OF CHICAGO, ILLINOIS.

MUSIC-SHEET FEEDER.

Specification of Letters Patent. Patented Apr. 29, 1919.

Application filed December 18, 1914. Serial No. 877,846.

To all whom it may concern:

Be it known that I, I'IENRY K. SANDELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Music-Sheet Feeders, of which the following is a specification.

My invention relates to improvements in electrically-operated controlling-devices of the type used in connection with mechanical musical instruments. More particularly, the invention is concerned with a form of controller and driving mechanism adapted to be used in combination with perforated record sheets for reproducing music. In machines of this general class, it is common to provide a record in the form of a perforated strip of paper or fabric which is wound upon one roll for purposes of handling, and when in use .is unwound from this roll, which will be called the music-roll, and wound upon a second roll, called the feed or take up roll, the intermediate portion of the sheet or strip between the two rolls being used to actuate or control the actuation of, the mechanical devices by which the musical instrument is caused to operate. In such devices as I have described, it has been common to provide various means whereby the feeding mechanism of the music-sheet is automatically stopped when the end of the sheet is reached. It is a principal object of my invention to provide a form of feedcontroller for the music-sheet which will not only cause the sheet to stop automatically when the end of the perforated record, or active part thereof, has been reached, but will further operate to automatically re- Wind the sheet upon the music-roll. It is a further object of the invention to provide in combination with such re-winding mechanism a means by which thefeed-roll is caused to resume automatically its feeding motion when the music-sheet has been completely rewound. With my mechanism it thus becomes possible to insert a music-roll in the mechanism and to start the same, and the mechanism will automatically function thereafter to 'feed the music-sheet or strip from the roll until the end of the sheet is reached, then re-wind the sheet, and then automatically feed the music-sheet through the mechanism again, and this process of feed ing, re-winding and feeding again continues automatically until the mechanism. is stopped.

In designing a mechanism embodying this princlple of operation I have effected numerous other improvements in the construction andoperation of a machine of the general type described. These further objects andadvantages of my design will be brought out 1n connection with the following detailed description of a form of music-sheet feeding and governingdevice which embodies the invention. In describing this particular embodiment of my invention, reference will be had to the accompanying sheets of drawings, in which Figure l is a front elevation of my improved machine; Fig. 2 is an end elevation of the same, certain portions of the casing being broken away to disclose more clearly the construction of the parts; Fig. 3 is a section of that end of the machine shown in Fig. 2 and taken on the line 33 of Fig. 1; Fig. i is a similar section but with the parts shown in winding position and with the gear wheels removed to show the con struction of the driving-dog parts; Fig. 5 1s a sect-ion on the line 55 of Fig. 1; Fig. 6 is an end elevation of the opposite end of the machine; Fig. 7 is a front elevation, partly in section, of the end of the machine shown in Fig. 2, the section being taken on the line 7-7 of Fig. 2; Fig. 8 is an elevation, partly in section, of the opposite end of the machine, the section being taken on the line 88 of Fig. 6; Fig. 9 is an enlarged detail section on the line 9 of Fig. (3; Fig. 10 is a detail sectional view taken on planes indicated by the lines 10 in Figs. 1, 6 and 12; Fig. 11 is a detail section taken on the line 11 of Figs. 1 and 2; Fig. 12 is an elevation, partly in section, of the inside of the 5 thereby in three different positions of the mechanism; Fig. 18 is an enlarged sectional view of the compound dog taken on the line 18 of Figs. 17 and 19; Fig. 21 is a section of the compound dog; Figs. 22 and 23 are .perspective views of the two members which make u the compound-dog; Fig. 24 is a perspective view of the feed-roll drivingcrank; Fig. 25 is a detail perspective view of the brush-bar frame support; Fig 26 is a detail perspective view of the trip for the brush-bar frame support shown in Fig. 25; Fig. 27 is a section through the brush-bar frame support and showing the relation of the trip thereto in the assembled position of the parts; Fig. 28 is an enlarged detail elevation, partly in section, of the pushrod or foot which raises the brush-bar; Fig. 28 is a detail plan view of the adjustable trip plate; Fig. 29 is an enlarged broken central section taken on the line 7 of Fig. 2; Fig. 30 is a section of the music-roll brake taken on the line 30 of Fig. 29; Fig. 31 is an enlarged elevation of the upper righthand corner of the frame, as shown in Figs. 2 to 4, the short-circuiting contact being shown in section; Fig. 32 is an enlarged detail section through the brush-bar, contactroll and music-sheet, showing the relative positions of these parts; Fig. 33 is an enlarged section through one end of a brushholder; Fig. 34 is an enlarged detail plan view showing the manner in which the brush is carried in the holder; Fig. 35 is a top plan view of my automatic reversingswiteh; Fig. 36 is a section on the line 36 of Fig. 35'; Fig. 37 is a section on the line 37 of Fig. 35; Fig. 38 is a section on the line 38 of Fig. 35; Fig. 39 is an enlarged detail section of the music-sheet fastener on the windingroll or take up roll; and Fig. 40 is a diagram matic showing of the electrical connections of the machine.

Mechanical construction.

Referring more particularly to the drawings, the numeral 50 designates a supporting-table or bench on which is mounted the frame of my machine. This frame is preferably made of four main castings, 2'. 6., a bottom casting 51, a top casting 52, and end castings 53 and 54. Journaled horizontally between the end castings 53, 54 is the feedroller winding or take up roll of my in vention. This roller is preferably constructed of a cast aluminum core designated 56, provided with end-flanges 57. It is desirable, however, to provide a certain frictional resistance to the re-winding operation in order that the music-sheet may be wound tightly and uniformly. This resistance is provided by a small spring-pressed plunger '260 (see Fig. 8) which is mounted in a boss in the end-casting 53 and bears against the end-flange of the feed or take up roll 55.

To attach the end of the muSic sheet to the core 56 I preferably provide a stud 58 tapped into the body of the roller and carrying a spring-wire retaining-device of the form indicated at 59 iii 39'. This spring-wire may be depressed by the finger of the operator to permit the eyelet 60, which is commonly secured in the end of the music-sheet to be passed over the stud, thespring-wire returning to the position in which it is shown in Fig. 39 after the eye let has come in contact with the core. By this simple means the end of the music-sheet is effectively held and at the same time may be very easily removed.

Referring to Figs. 7 and 8, it will be seen that the feed-roller is provided at its ends with the extending stub-shafts 61 and 62, respectively, which are mounted in ballbearings 63 carried by the end-plates 53 and 54. Thrust-collars 64 carried on these stubshafts and secured thereto as by set-screws 65, permit of the feedroll or windii'ig- -roll being adjusted axially and maintained in any position of adjustment. The stub-shaft 62 extends through an opening 66 in the end-plate 54 (see Fig. 18) and on its projecting end is pinned a hub-boss 67 which carries a crank-arm 68,- in whi'ch is mounted a driving-stud or crank 69. This stud is driven from the com-pound dog, as will later appear.

The power for driving my machine is preferably supplied bya small electric mo-' tor, designated generally at 70, this motor being mounted on a rearwardlyaextending portion 71 of the end-casting 54, the motorbase being secured to the'casting by any suitable means, such as bolts 7 2, shown in Fig. 2. The armature-shaft of the motor carriesat its front end a small flywhe'el 73, in the front face of which are secured the drivingstuds 74. These studs engage the T-h'ead 75 of a wormshaft 76, the studs being preferably cushioned, as by felt tubes 77 slipped over the studs, so that the engagement of the studs with the T-head 75 shall be without shock and noiseless. The worm-shaft 76 is journaled in suitable bearings (not shown) which are carried by a housing 77, best shown in Figs. 1, 2 and 7. As will be seen from these figures, the housing ismade up of two castings, the inner casting 78 carrying a bracket 79 which is bolted to the lower end of the end-casting 54 and the outer casting, designated 80, secured to the inner half as by cap-screws 81. That portion of the worm-shaft 76 lying within the housing 77 is provided with a driving wormgea'r 82, which meshes with a worm-wheel 83 pinned to a horizontal-shaft 84 (see Fig. 18) which. is journaled in plain hearings in the housing and extends outwardly therefrom through the inside housing-casting 78 and alines with the stub-shaft 62 of the feed-roll or winding roll 55. I preferably bore out the opening in the hub-boss 67 which is mounted on the stub-shaft 62 in order to provide a bearing for the projecting end of the wormwheel shaft 84. Between its bearings 85 and the bearing formed by the inside casting of the housing 77, the wormwheel shaft carries loosely thereon the re-winding gear 86. Mounted on the shaft 84 between the re-winding gear 86 and the hub-boss 67 is the compound dog which forms an important part of my invention. This dog, designated generally by the numeral 87, is made up of two relatively movable members, 2'. e., a member 88 in the form of a hollow cylinder which is pinned to the shaft 84 and carries spaced cranks 89 and 90 between which passes the crank pin 91 on which is journaled the second member of the dog. The exact construction of these parts will be seen best by reference to Figs. 17 to 24. From these views it will be seen that the second member of the dog designated 92 is of general triangular form, the one angle of the triangle being formed as a toe 93 and another angle as a toe 94 carrying on its side faces projecting lugs 95 and 96. The dog member 92 is pivoted loosely on the crank-pin 91 but is frictionally held against accidental or gravity displacement by a small brake-shoe 97 mounted in the hollow extremity of the crank-arm 90 and pressed against the dog-member by a light spring 98. That face of the re-winding gear 86 which is'adjacent the dog 87 is provided with a driving-stud 99 which is adapted to be engaged by the dog, as will later appear. Without considering at the present time the exact manner of operation of the compound dog, it will be assumed for the purposes of further description that this dog will operate to drive the crank-arm 68 and through it the winding or feed-roll shaft 62 when the worm-wheel shaft 84 is revolved in one direction, and will disengage itself from the crank 68 and engage and drive the re-winding gear 86 when the worm-wheel shaft 84 is rotated in the opposite direction.

Referring now to Figs. 2 and 3, it will be seen that the re-winding gear 86 meshes with an idler 100 journaled on a shaft 101 carried in a boss 102 cast integrally with the end-plate 54, a cotter-pin or other simple fastening means, shown at 103, being utilized to maintain the idler 100 in position. The idler 100 in turn transmits power to a pinion 104 mounted on a shaft 105 (see Fig. 29) which is journaled in a double annular ball-bearing 106 carried by the hollow boss 107 of the end-casting 54, a set-screw 107 holding the bearing within the boss 107 (see Fig. 4). The outer end of the shaft 105, which will be called the music-roll drive-shaft, carries in addition to the pinion 104 a roller-clutch comprising a central cylindrical member 108 and an outer ring 109, the two parts having a. loose fit so that the inner member may turn freely in one direction, and being adapted to be locked together as by a roller 110 operating in a notch 111 in the inner member when the latter turns in the other direction. The construction and operation of such clutches is well known, and since I make no claim of invention as to this particular part of my apparatus, I will not describe the same in any greater detail. As a convenient method of mounting the roller-clutch, I prefer to provide the inner member 108 with a reduced neck-portion 108 over which the counterbored hub 104 of the pinion 104 is sleeved, the pinion, clutch-member and shaft being thus secured together by a single pin 112. The outer ring 109 of my clutch-member serves as a brake-drum against which bear the opposed leather brake-shoes 113 which are carried by the curved ends 114 of a pair of arms 115, which are mounted on a common pivot 116 carried by a stud 117 screwed into a proper tapped opening in the endcasting 54. (See Fig. 11). The brake-shoes 113 are held in frictional contact with the ring 109 by a coil spring 118 surrounding a through bolt 119, as shown in Fig. 30, and the pressure with which the brake-shoes engage the ring may be adjusted by the nut and lock-nut 120 of the bolt 119 in an obvious manner.

The inner end of the music-roll driving shaft 105 is reduced and pointed, as shown at 121 (Fig. 29) to engage a suitable aperture 122 in the end of a music-roll 123. In order that the music-roll may be driven from the shaft 105, I provide driving-connections in the form of spring-pressed plungers 124 mounted in the cylindrical bores 125 of a plug 126, which is pinned to the end of the shaft 105. The outer ends of the plungers 124 are reduced, as shown at 127, and are adapted to enter perforations 128 in the end of the music-roll and to serve as a driving means for the same. I prefer to provide my music-rolls with two sets of apertures 128, as will be seen in Fig. 5, so that in any posi tion of the roll an angular movement of 45 or less will be sufficient to permit the driving plunger-s 127 to engage the roll.

Referring now to Figs. 1l0, 11 and 12, it will be seen that the music-roll 123 is mounted horizontally between the end-castings 53, 54 and parallel to and above the winding-roll or feed-roll 55. The righthand end of the music-roll, as seen from Fig.

l, is carried by the projecting end 121 of the shaft 105. The opposite end of the roll is preferably provided with a. stub-shaft 129 which rests between two bearing-rollers 130 journaled on cap-screws 131 which are fastened to the inner face of the pivoted bearing-plate 132 (see Figs. 8, 10 and 12). As 130 best shown in Fig. 8, the bearing-plate is pivoted at its rear extremity between pointed screws 133 secured in a base 134 bolted to the end-plate 53, as by the screws 135. Adjacent its central portion the base 134 has formed thereon an outwardly-extending arm 136 which carries a stop 137 which limits the outward swing of the pivoted plate '132. This plate is normally pressed inward by a tension-spring 138 which is stretched between an eye 139 secured to the end-plate 53, and an eye 140 formed in an arm 141 which projects outwardly over the face of the bearing-plate 132. The portion, of the bearingplate 132 which alines with the stub-shaft 129 in the end of the music-roll is drilled and tapped to receive an adjusting-screw 142, which bears against the end of the stub-shaft 129. The adjusting-screw is provided with the usual slotted head and with a. lock-nut 143. It is the purpose of this screw to serve as an adjustable thrust-bearing and to maintain the music-roll in its proper position axially. As a stop to limit the inward swinging motion of the pivoted bearing-plate 132,

the latter is provided with an outwardly extending lug 144 which lies overand engages the outer face of the casting 53 (see Fig. 9);

Referring to Fig. 10, it will be seen that the inner face of the pivoted bearing-plate 132 is inclined toward the front, as shown at 145, and on this face is formed a horizontal rib 146, shown in Figs. 10 and 12, which facilitates the operation of inserting and removing the music-roll. It will be seen from these same figures that the endcasting 53 of the frame is provided with an inwardly-facing recess 147 substantially in alinement with the rib 146.

Journaled horizontally between the'musioroll 123 and the winding or feed-roll 55 is the contact-roll 148 (see Fig. 1). Referring now to Figs. 15 and 16, it will be seen that the contact-roll is mounted on stub-shafts 149 and 150 carried, respectively, by the ballbearings 151 and 152. The ball-bearing 151 on which the shaft 149is mounted is housed within' a hollow boss 153 cast integrally with the end casting 54. This shaft 149 is movable axially in its bearing, a coil spring 154 which bears against a collar 155 pinned upon the reduced end 156 of the shaft being used to urge the shaft 149 inward. A cotter-pin 157 in the outer end of the shaft limits the movement of the same in this direction by cOntacting with the outer end of the bearing 151. The reduced end 156 of the shaft 149 is adapted to enter a central recess 158 in the contact-roll 148, and a headed pin 159 secured in the collar 155 engages a second recess 160 in the end of the contact-roll 148. The opposite end of the contact-roll is similarly supported, being provided with recesses 158and 160 to receive, respectively, the tapered extremity 161 of the shaft 150,

Figs. 1 and 7, being free to move axially outward against the spring 154. The reduced end 156 of the stub-shaft and the looking or driving pin 159 carried by the stem (see Fig. 16) may thus be disengaged from the contact-roll to permit the latter to be removed or inserted. Instead of being mounted directly in the end-casting 53, the ball-bearing 152 is carried by an arm 164 which is a part of a separate casting 165, which I shall call the governor frame. This casting is secured, as by bolts 166, to the outer face of the frame-member 53 (see Fig. 6) and carries a ball-bearing 167 in line with the ball-bearing 152 and supporting the outer end of the stub-shaft 150. Between the bearings 152 and 167 (Fig. 15) the stub-shaft is provided with a bevel gear 168, which is pinned to the shaft, meshing with a bevel pinion 169 on the end of a vertical shaft 170 journaled in a bronze bushing 171 screwed into the governor frame casting.

The lower end of the shaft 170,'which I shall call the governor shaft, is supported in a bracket 172 at the foot of the governor frame casting (see Fig. 8), a bearing-screw 17 3 being provided to abut against the lower end of the governor shaft. The bearingscrew may be adjusted vertically in an obvious manner to maintain the governorshaft in its proper position. Betweenthe bearing 171 and 173 the governor-shaft car.- ries a cross-bar 174 (Fig. 8) on the ends of which is journaled the wabble governor 175 (see Fig. 6). Below the governor 175 a sliding collar 176 is mounted uponthe governor-shaft, the collar and the governor being connected by a link 177 so that as the governor assumes a horizontal position under the action of centrifugal force the collar 176 may be lifted. The collar 176 is adapted to bear on its lower face against a contact-brush 178 mounted in the upwardly projecting end 179 of a pendulum 180. This pendulum is pivoted on a bolt 181 (see Figs. 8 and 6) which is carried by, and insulated from, the depending arm 182 of a lever 183 pivoted on a screw 184 secured in the governor-frame 165. The angular adjustment of the pivoted arm 183 is fixed by the governorscrew 185 which passes through and is threaded into depending brackets 186 formed on the governor-frame 165 and has its oint 187 bearing against the depending arm 182 which carries the pendulum 180. The governor screw 185 extends forwardly and substantially to the front of the frame and on its front end is provided with a knurled head 188 by which it may be turned.

It will be seen that as this screw is threaded in and out, the arm 183 will be swung about its pivot 184 and the pendulum 180 will thereby be raised or lowered. This screw and its relation to the parts which I have just described is illustrated best in Fig. 13, in which it will be seen that the screw 185 lies parallel to and below a forwardly-extending arm 189 formed upon the governor-frame casting 165. The front end of this arms carries a governor-scale 190 (see Figs. 13, 14 and 6), suitably graduated, as shown in Fig. 14, and carrying at one side thereof a guide 191 for a pointer-arm 192 which lies parallel to and above the scale-arm 189 (see Fig. 6.) and is pivoted to the casting 165 by a screw 193 (Fig. 13). The rearwardlyextending portion 194 of the pointerarm lies under and bears against the lower face of the sliding collar 176. The pointer-arm 192 therefore indicates on the scale 190 the position of the sliding collar 176.

Lying directly back of and parallel to the contact-roll 148 is a swinging-frame 195, the upwardly-extending arms of which are pivoted to the end-castings 53, 54 (see Fig. 5, in which the numeral 215 designates the pivot in the casting 54). At its lower or free end the frame 195 carries a strip 197 made of fiber or other insulating material, in which strip there are mounted a plurality of brush-holders 198 (see Figs. 5, 32 and 33) in the form of hollow metal tubes threaded externally, as shown in Fig. 33, the tubes being secured in the strip 197 by being let into bores 199 perforating the strip. The brush-tubes are preferably arranged in two rows, one slightly above the other, as shown in Fig. 32, the tubes of the two rows being inclined at a slight angle to one another so that the brushes which are mounted within the tubes may lie in a single line at their contact terminals. Each brush-holder has threaded on the stem thereof a metallic nipple 200 which carries a connector 201 by which the lead-wire 202 may be connected with the brush. The brushes themselves consist of pieces of tempered resili-.

ent steel wire, designated 203, bent in the form of a hair-pin, as shown in Fig. 34, so that each brush has two contact points, the loop of the hair-pin passing through an eye 204 formed in a key 205 which slides in a key-way 206 in the brush-tube (see Fig. 33). The key 205 is of greater depth than the key-way, and the projecting part of the key is recessed, as shown at 207, to embrace an adjusting-nut 208 threaded upon the brush-tube, and it will be obvious that as the nut 208 is threaded in and out on the brush-tube, the key 205 will slide in the key-way and advance or retract the brush 203. As shown in Fig. 32, the contact terminals of. the brushes 203 are supported and guided by slots 209 formed in a second insulating-strip 210 (which I call a guiding comb as it corresponds in function to that type of member) mounted in the casting 195, the slots being vertical and a separate slot being provided for each brush. By this construction, the point of each brush is supported at a point very close to the contact terminal which bears against the contact-roller 148, and at the same time each brush is free to move vertically within its slot, so that the resiliency of the brushes may act to hold their terminals always in contact with the contact-roller. Referring again to Figs. 15 and 16, it will be seen that the contact-roller is corrugated or grooved,

the corrugations being of approximately the same depth as the radius of the brushes, so that each brush wire rides within a separate groove and contacts with the bottom and sides thereof. The rear face of the strip 210 is provided with a rubber tube, indicated at 210, which prevents the brushes from being readily sprung out of their slots. Back of this tube is shown the edge 211 of a sheet metal shield 212 (see Fig. 5) which lies between the end castings 53, 54 and back of the winding or feed-roll 55.

Referring again to Fig. 5, it will be seen that the music-sheet or strip 213 is designed to pass from the music-roll 123 downwardly and behind the contact-roller 148 and be tween the-same and the brushes 203, and thence to the winding or feed-roll 55, and as each perforation of the music-strip or sheet passes under the brush terminal 203, the resiliency of the brush will cause it to pass through the perforation and to form metallic contact with the corrugated sur face of the roller 148.

The frame 195 which carries the brushes 203 has at one end an arm 214, which extends beyond the pivot-bolt 215 and is then turned outwardly to extend through the cored aperture 216 of the casting 54. (See Figs. 3 and 4). To this arm is bolted (see Figs. 3, 4 and 11) the forwardly-extending arm 217 which lies parallel to the outer face of the end-casting 54, and the front extremity of the arm has an eye 218 in which is hooked a coil-spring 219, the lower end of which is fastened in an eye 220 carried by the casing-member 77 which houses the worm and worm-wheel. An adjustable stop-screw 217 is mounted above the arm 217 to limit its lift. The coil-spring 219 is a tension-spring and exerts a force tending to rock the arms 217 and 214 downwardly about the pivot 215 and thus to swing the brush-carrying frame 195 outwardly to a position shown in dotted lines in Fig. 32. In order to hold the brush-carrying frame in its normal or full-line position, as shown in Fig. 32, the arm 217 is provided with a pivoted foot 221 (see Figs. 3, 4, 25 and 19), the foot 221 being 

